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reSolve: Bifold boxes

This lesson challenges students to use proportional reasoning to explain how changing the size of a square will affect the size of a box folded from that square. Students fold an origami box from a square of paper and record the dimensions of the resulting box. They then fold a box from a square of paper four times the area, and explore how this changes the dimensions of the new box. The lesson is outlined in detail including curriculum links, vocabulary, materials needed, discussion points, a slide show describing how to fold the box and a link to a video demonstration. This sequence is part of the reSolve: Mathematics by Inquiry program.

Additional details
Year level(s)	Year 5
Audience	Teacher
Purpose	Teaching resource
Format	Downloadable resources
Teaching strategies and pedagogical approaches	Mathematics investigation
Keywords	solids, shapes, nets, origami, scale, explicit teaching
Curriculum alignment
Curriculum connections	Numeracy
Strand and focus	Space, Build understanding, Apply understanding
Topics	Shapes and objects
AC: Mathematics (V9.0) content descriptions	AC9M5SP01 Connect objects to their nets and build objects from their nets using spatial and geometric reasoning
Numeracy progression	Understanding geometric properties (P4)
Copyright details
Organisation	reSolve Maths by Inquiry
Copyright	© Australian Government Department of Education, Skills and Employment 2021. Creative Commons BY-NC-SA 4.0.